NOTES ON THE DIPTERA OF DERBYSHIRE. 273 
NOTES ON THE DIPTERA OF DERBYSHIRE. 
By Eric Drassue, D.Sc., F.L.S., anp Hiupa DraBBie. 
The Syrpuipm of North-Iast Derbyshire. 
Very little attention seems to have been given to the 
Syrphide in Derbyshire. In the ‘ Victoria County History’ 
(vol. i, 1905) a list of species recorded up to that date is given, 
but the localities are almost entirely confined to South Derby- 
shire, the only places mentioned being Burton, Little HKaton, 
Clifton, Derby, Willington, Dove Dale, and Chesterfield (with 
one record). There is thus only one species recorded in the list 
from the north-east of the county, namely, Chrysochlamys cuprea. 
A search through the literature has yielded but little of 
interest subsequent to the date of the ‘ County History.’ 
The following notes are the result of work in North-Kast 
Derbyshire during April, July, August, and part of September, 
1916. The localities mentioned lie within a radius of about 
ten miles from Chesterfield. The district is very varied floris- 
tically and geologically, lying on Millstone Grit, Middle and 
Lower Coal Measures, and Permean Limestone. Insufficient 
attention has been given to the moorlands. We hope to work 
the moors more fully next season. 
On September 5th a great swarm of Syrphids occurred at 
Spital. The flowers chiefly visited by the insects were Hieracium 
boreale, Leontodon autumnale, Dandelion, and Convolvulus arvensis. 
Composing the swarm were Platycheirus manicatus, P. albi- 
manus, P. scutatus, Catabomba pyrastri, Syrphus luniger, S. 
corolla, S.lunulatus, S. vitripennis, Evristalis tenax, EH. pertinax, 
and £. arbustorum. 
SYRPHINAES. 
Pipizella flavitarsis, Meigen. Spital. 
Liogaster metallina, Fabry. Holymoorside. 
Chrysogaster hirtella, Loew. Holymoorside. 
+Ch. macquarti, Loew. Holymoorside. 
+Chilosia sparsa, Loew. Wingerworth, April 25th, thus 
antedating Verrall’s earliest record. 
Ch. pulchripes, Loew. Spital, Barlow. 
Ch. variabilis, Panzer. Linacre, Moorhall. 
+Ch. barbata, Loew. Brimington, Spital, Loads. 
+Ch. intonsa, Loew. Brimington. 
+Ch. impressa, Loew. Unthank. 
Ch. albitarsis, Meigen. Linacre. 
+Ch. cynocephala, Loew. Brimington, Spital, Barlow. 
Platycheirus manicatus, Meigen. Common everywhere. 
tP. peltatus, Meigen. . Spital, Holymoorside, Wingerworth, 
uaper Langworth, up to September 10th, thus extending the 
period given by Verrail. 
